87期那个是你游嫂 20:22:32
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  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <div id="app">
    <h3>小黑的书架</h3>
    书名:<input type="text" v-model="ming"> 作者:<input type="text" v-model="ren">
    <button @click="add">添加</button>
    <ul>
      <li v-for="(item, index) in booksList" :key="item.id">
        <span>{{ item.name }}</span>
        <span>{{ item.author }}</span>
        <button @click="del(item.id)">删除</button>
      </li>
    </ul>
  </div>
  <script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
  <script>
    const app = new Vue({
      el: '#app',
      data: {
        booksList: [{
          id: 1,
          name: '《红楼梦》',
          author: '曹雪芹'
        }, {
          id: 2,
          name: '《西游记》',
          author: '吴承恩'
        }, {
          id: 3,
          name: '《水浒传》',
          author: '施耐庵'
        }, {
          id: 4,
          name: '《三国演义》',
          author: '罗贯中'
        }],
        ming: '',
        ren: ''
      },
      methods: {
        add() {
          this.booksList.push({
            id: this.booksList.length + 1,
            name: this.ming,
            author: this.ren
          })
          this.ming = this.ren = ''
        },
        del(k) {
          this.booksList.forEach(function (item, index) {
            console.log(this);
            if (item.id === k) {
              this.booksList.splice(index, 1)
            }
          })



       

        }
      }
    })
  </script>
</body>

</html>